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PilotLPTM [1.2K]
3 years ago
10

3x+2y=9. 3x+y=6 What is x and what is y please help I have no idea what to do-

Mathematics
2 answers:
Andrews [41]3 years ago
5 0
Here is the answer you want
Vladimir79 [104]3 years ago
3 0

Step-by-step explanation:

3x + 2y = 9

- (3x + y = 6)

=> y = 3.

Therefore 3x + (3) = 6, 3x = 3, x = 1.

The solutions are x = 1 and y = 3.

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Which graph represents a proportional relationship?<br> A<br> B<br> C<br> D
Andre45 [30]

Answer:

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3 years ago
The speed of light is approximately 299,000,000 meters per second.
jek_recluse [69]

Answer:

2.99 x 10⁸ meters per second

Step-by-step explanation:

Scientific notation (also called "Standard form") is written in the form of a \times 10^n, where  1\leq a < 10  and  n is any positive or negative whole number.

To <u>convert</u> a number into <u>scientific notation</u>, move the decimal point to the left or right until there is <u>one digit before the decimal point.</u>

The number of times you have moved the decimal point is the power of 10 (n).

If the decimal point has moved to the <u>left</u>, the power is <u>positive</u>.

If the decimal point has moved to the <u>right</u>, the power is <u>negative</u>.

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⇒  299000000.

Move the decimal point 8 places to the left:  

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Get rid of the redundant zeros:

⇒ 2.99

Multiply by 10 to the power of the number of decimal places moved:  

⇒ 2.99 x 10⁸

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7 0
2 years ago
Please I need help it's really hard
Vitek1552 [10]
I'd say angle A = angle B
arc tangent (angle B) = 150 / 555
<span><span><span>arc tangent (angle B) = 0.2702702703 </span>
angle B = 15.124 degrees

By the way 555 feet is the height of the Washington Monument.
</span> </span>
3 0
3 years ago
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